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/*
* This file is part of the Distributed Network Block Device 3
*
* Copyright(c) 2011-2012 Johann Latocha <johann@latocha.de>
*
* This file may be licensed under the terms of of the
* GNU General Public License Version 2 (the ``GPL'').
*
* Software distributed under the License is distributed
* on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
* express or implied. See the GPL for the specific language
* governing rights and limitations.
*
* You should have received a copy of the GPL along with this
* program. If not, go to http://www.gnu.org/licenses/gpl.html
* or write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <getopt.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include "../types.h"
#include "../version.h"
void print_help(char* argv_0)
{
printf("Usage: %s -H <host> -p <port> -d <device>\n", argv_0);
printf("Start the DNBD3 client.\n");
printf("-H or --host \t\t Host running dnbd3-server.\n");
printf("-p or --port \t\t Port used by server.\n");
printf("-d or --device \t\t DNBD3 device name.\n");
printf("-h or --help \t\t Show this help text and quit.\n");
printf("-v or --version \t Show version and quit.\n");
exit(EXIT_SUCCESS);
}
void print_version()
{
printf("Version: %s\n", VERSION_STRING);
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
char *host = NULL;
char *port = NULL;
char *dev = NULL;
int opt = 0;
int longIndex = 0;
static const char *optString = "H:p:d:hv?";
static const struct option longOpts[] =
{
{ "host", required_argument, NULL, 'H' },
{ "port", required_argument, NULL, 'p' },
{ "device", required_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'v' }, };
opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
while (opt != -1)
{
switch (opt)
{
case 'H':
host = optarg;
break;
case 'p':
port = optarg;
break;
case 'd':
dev = optarg;
break;
case 'h':
print_help(argv[0]);
break;
case 'v':
print_version();
break;
case '?':
print_help(argv[0]);
}
opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
}
if (!host || !port || !dev)
{
printf("FATAL: Not enough information specified\n");
exit(EXIT_FAILURE);
}
int fd;
fd = open(dev, O_RDONLY);
if (ioctl(fd, IOCTL_SET_HOST, host) < 0)
printf("ERROR: ioctl not successful\n");
if (ioctl(fd, IOCTL_SET_PORT, port) < 0)
printf("ERROR: ioctl not successful\n");
if (ioctl(fd, IOCTL_CONNECT) < 0)
printf("ERROR: ioctl not successful\n");
close(fd);
exit(EXIT_SUCCESS);
}
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